A quick check of The Alexander Papers shows that Hindman was issuing general and special orders for both the Trans Mississippi District and The Army of the South West in mid June 1862. None of which was numbered 72.

Order numbers for mid June include:

6/12 G O #16 Trans-Miss Dist
6/13 HQ Trans-Miss Dist- S O #16
6/17 Trans-Miss Dist S O #17

6/13 Special Orders #3 Army of the South West
6/14 Special Orders #4 Army of the South West
6/16 Special Orders 6 Army of the South West